Effect of calcia additions on the electromechanical properties of samarium-modified lead titanate ceramics

Author

Xue, W.R. ; Lu, P.W. ; Huebner, W.

Author_Institution

Nanjing Inst. of Chem. Technol., China

fYear

1991

fDate

33457

Firstpage

101

Lastpage

104

Abstract

Modified lead titanate ceramics with a composition of (Pb_0.88-xCa_xSm_0.08)(Ti_0.98Mn _0.02)O₃; x=0.11, 0.13, 0.15 and 0.17 were prepared. Simultaneous doping of samarium and calcium resulted in normal ferroelectric behavior, i.e. The dielectric properties changed in a manner typically associated with isovalent shifting of the Curie temperature. However, the unique attribute of this system appeared for the x=0.13 and 0.15 compositions, which exhibited k_t´s ⩾57%

Keywords

Q-factor; calcium compounds; ceramics; dielectric polarisation; electric breakdown; ferroelectric Curie temperature; ferroelectric materials; lead compounds; permittivity; piezoceramics; samarium compounds; ((PbCa)_0.88Sm_0.08)(Ti_0.98Mn_0.02)O₃; (Pb_0.88-xCa_xSm_0.08)(Ti_0.98Mn_0.02)O₃; (PbCaSm)TiO₃:Mn; Curie temperature isovalent shifting; calcia additions; dielectric properties; electromechanical properties; ferroelectric behavior; samarium-modified lead titanate ceramics; Anisotropic magnetoresistance; Ceramics; Density measurement; Dielectric measurements; Doping; Impedance measurement; Lead; Surface impedance; Temperature; Titanium compounds;

fLanguage

English

Publisher

ieee

Conference_Titel

Applications of Ferroelectrics, 1994.ISAF '94., Proceedings of the Ninth IEEE International Symposium on

Conference_Location

University Park, PA

Print_ISBN

0-7803-1847-1

Type

conf

DOI

10.1109/ISAF.1994.522308

Filename

522308